165655612 has 12 divisors (see below), whose sum is σ = 290065216. Its totient is φ = 82779840.

The previous prime is 165655601. The next prime is 165655619. The reversal of 165655612 is 216556561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165655619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564 + ... + 18547.

Almost surely, 2^165655612 is an apocalyptic number.

It is an amenable number.

165655612 is a deficient number, since it is larger than the sum of its proper divisors (124409604).

165655612 is a wasteful number, since it uses less digits than its factorization.

165655612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23988 (or 23986 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The square root of 165655612 is about 12870.7269413969. The cubic root of 165655612 is about 549.2061406605.

The spelling of 165655612 in words is "one hundred sixty-five million, six hundred fifty-five thousand, six hundred twelve".